This study provides evidence that trade expansion has contributed to the degradation of air pollution in China. On the basis of different responses of counties’ trade to China's World Trade Organization accession at the end of 2001, we exploit air pollution data from NASA to construct a difference‐in‐differences predicted trade as an instrument for our identification. We document statistically significant and robust evidence on trade expansion, which accounts for approximately 60% and 20% for the increase of PM2.5 and SO2, respectively, in China.

 Studies around Lake Victoria documented various challenges hindering higher landing prices among artisanal fishers associated with varying attributes of fish. However, determination of the effects of fish attributes on landing price, which is potential to the wellbeing of fishermen, remains undisclosed during the landing of the fish harvest to the landing sites. This paper employed cross-section data from 300 fishermen to examine the effects of fish attributes on fish prices of the selected fish species.